• FLM-3 is a Time Division Multiplexer, enabling up to 48 asynchronous terminals to be multiplexed onto a single cable, in point-to-point or ring-type applications. Each channel can be used for either a data signal or a control signal. FLM-3 contains a built-in modem which drives the high speed multiplexed data over a fiber optic cable up to a distance of 4 km (2.5 miles).

• Multiplexing is performed by sampling all subchannels at a rate much higher than the data rate of each subchannel, and then interleaving the samples into a frame. Then, FLM-3 transmits the frame onto the main channel. At the other end, the samples are recombined to form the original bits. The high sampling rate of FLM-3 enables transmission of async data and control signals with low distortion and without delay.

• FLM-3 has four 50-pin female connectors, located on the rear panel, each supporting 12 channels. Connection of individual units can be provided by using octopus-type cables. These cables split the cable which extends from the 50-pin connector, into 12 individual cables.

• Local and remote digital loopback capability, provided through front panel switches and LEDs, enables complete monitoring of the local and remote activities from either end of the system.

SPECIFICATIONS

• TDM with integral modem
• Up to 48 async subchannels over a single cable
• Subchannel data rates up to 38.4 kbps
• Point-to-point or ring-type configuration
• Local and remote loopback
• Transmission range up to 4 km (2.5 miles)
• Transparent to character structure
• Immunity to EMI/RFI, ground loops and lightning
• 19" rack mountable, 1U
• Easy to install

FLM-3/*/+
48 Port Local Fiber Optic Multiplexer

ORDERING

FLM-3/13/ST/115
FLM-3/ST/115
FLM-3/ST/13M/115
FLM-3/ST/220

 
APPLICATION